fix(resolve): dont overwrite isRequire from baseOptions

[sodatea]

Description

Fixes #5798

baseOptions may already comes with an isRequire property.
For example,

vite/packages/vite/src/node/optimizer/esbuildDepPlugin.ts

Lines 47 to 50 in c344865

	const _resolveRequire = config.createResolver({
	asSrc: false,
	isRequire: true
	})

which in turn calls

vite/packages/vite/src/node/config.ts

Lines 407 to 417 in c344865

	resolvePlugin({
	...resolved.resolve,
	root: resolvedRoot,
	isProduction,
	isBuild: command === 'build',
	ssrConfig: resolved.ssr,
	asSrc: true,
	preferRelative: false,
	tryIndex: true,
	...options
	})

Additional context

Need to add a test case (that esbuildDepPlugin should resolve to the CJS entry of a transitive dependency if it is required) later.

---

What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

Before submitting the PR, please make sure you do the following

• Read the Contributing Guidelines.
• Read the Pull Request Guidelines and follow the Commit Convention.
• Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
• Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
• Ideally, include relevant tests that fail without this PR but pass with it.

[patak-dev]

Let's merge the tests in another PR so people can start testing this while debugging the remaining regressions